Relay.



A. A. ZIEGLER,

RELAY. APPLxc/wme: man len-.8.19as. 1,257,663. Pefeeeeed Feb. 26, 1918.

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A. A. ZIEGLER.

RELAY.

APPLICATION FILED IAILS. Isla.

Patented Feb. 26, IBIS.

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Patente Feb. 28, 19M,

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A. ZIEGLH.

RELAY.

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Y 'L fm UNITED STATES PATENT OFFICE.

ALFRED A. ZIEGLER, 0F BOSTON, MASSACHUSETTS, ASSIGNR TO UNITED ELECTRIC APPARATUS CO., 0F BOSTON, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

RELAY.

Application filed January 8, 1913.

the construction of the relay to increase its efliciency and reliability.

Figure 1 is a front elevation of a relay embodying this invention.

Fig. 2 1s a plan view of the carryingplate.

Figs. 3 and 4L are details of the end portions of the bracket to which the carryingplate is attached.

Fig. 5 is a side elevation of the relay, a portion of the housing being broken away.

Fig. 6 is a sectional detail of a portion of the carrying-plate and means thereon to `support the removable part of the housing,

and also to support the magnets.

Fig. 7 is a bottom plan view of the carrying-plate.

Fig. 8 is a sectional detail of' the stationary contact-members which may be employed.

Fig. 9 is a plan View of the movable contact-members which may be employed.

Fig. l0 is a plan view of a base plate which may be attached to the housing.

Fig. 11 is a section of a portion of the carrying-plate and the binding posts for the leading-in wires and magnet-wires which are arranged on the carrying-plate.

Fig. 12 is a modified form of stationary contact-member.

Fig. 13 is a modified form of means for supporting the removable portion of the housing and for venting the same.

One of the features of the present invention consists in the provision of a housing` inclosing the contact-members having a top Wall of insulating material, as porcelain, which is constructed to serve as acarryingplate for the relay contact-members and for ythe magnets, and 20 represents said porcelain top Wall or carrying-plate, which is made of any suitable shape, although pref- Specication of Letters Patent.

Patented Feb. 26, 1918.

Serial No. 740,775.

erably cpiadrangular and of a substantial thickness. Said plate has a groove in its under side extended entirely around it, to receive a packing-ring 21, against which the upper edge of a glass globe or inverted dome is pressed to form a substantially tight housing. Said globe is held in position by a center-bolt 23, which extends through the plate 2O and through a. metallic reinforcing plate l-l secured to the underside of the carrying-plate, and through the bottom wall or" the globe. The head of the bolt 23 is made square and is anchored in a correspondingly shaped recess in the plate 20, (see Fig. 6) to prevent it from turning and from moving` longitudinally, and its threaded end projects through a sleeve 2-1, arranged in a hole in the bottom of the globe, (see Fig. 5,), which sleeve is flanged at both ends and its upper flanged end engages the interior of the bottom wall of' the globe. A nut 25 is arranged on the extremity or' the bolt, which has a flanged neck to rotatably engage the lower flanged end of' the sleeve, and said nut bears against suitable washers arranged on the sleeve and when turned on the bolt the Washers will be pressed against the bottom of the globe and the globe pressed against its packing-ring 21. The sleeve is employed to hold the nut from being easily removed, and to admit of the flanged end of the nut passing over the lower flanged end oi' the sleeve said lower end of the sleeve is slitted to form resilient portions over which the flanged end of the nut is sprung, thereby forming a swivel connection.

Sometimes a base-plate or stand 2S, is employed, as represented in Figs. 1 and 10, which is attached to the bottom of the globe, so that the relay may be supported upon a table or other flat surface, and, in such case, the base-plate will be made of metal, having its top surface arranged to engage the bottom of the globe, and having a center-hole for the bolt 28, and it will be arranged on said bolt between the washers which are arranged thereon, and is held in place by the nut.

As the relay is often times employed out of doors, and hence subjected to widely different and suddenlychanged temperatures, the air contained in an air-tight or substantially air-tight housing is not immediately responsive to such changes, and becomes cloudy, and sometimes moisture collects, which is deleterious, and to obviate this trouble, herein the housing is vented so that the air contained therein is immediately responsive to changes in the outside atmosphere.

To accomplish this result the bolt 23 may be formed with a longitudinal hole extended from its lower end upward to a point Within the housing, as represented by dotted lines, Fig. 6, and Within the housing said bolt has one or more transverse holes 2G leading from said longitudinal hole, to preduce an open passage from the inside to the outside of the housing, or in lieu thereof the bolt 27, (see Fig. 13) may be employed, having a longitudinal hole throughout its length, and having one or more transverse holes leading from said longitudinal hole intermediate its length, thereby increasing the area of the vent passage. ln such case the top of the bolt will be exposed at the top of the carrying-plate, and the upper end of the longitudinal hole Will be branched to extend in different directions, and a bonnet 29 Will be xed to the top of the bolt but separated a short distance therefrom, which permits a free passage of air but prevents rain, snow and dust from entering the vent-passage.

It is especially designed that the relay shall be adapted to be suspended from a Wall or other support, and herein the carrying-plate 20, has attached to its rear edge a metallic bracket for accomplishing this result. Said bracket consists of a base 8O extended along the rear edge of the carryingplate from end to end thereof, having at each end forwardly extended ears 3l, 32, and the ears 3l overlie the top of the carrying-plate and the ears 32 extend around the corners thereof, thereby to protect the corners of said plate, and the ears 31 have threaded holes for the attaching-screws 33, which latter are extended up through smooth holes in the carrying-plate, as represented in Fig. il. Said bracket also has at each end an upwardly extended ear 34, formed with a key-hole slot 35 to receive a supporting-pin or hook. Said bracket not only protects and reinforces the rear edge of the carrying-plate, Which plate is quite brittle, but also serves as a very effective means for supporting said plate.

The binding-post for the connecting-Wires of the magnets may be arranged on a block ot insulating material supported by means connected with the back-piece of the niagnets, similar to that shovvn in my application #741,650, and the binding-posts for the leading-in Wires and for the magnet-Wires may be arranged on the carrying-plate 20, as best shown in Fig. 11. Upon reference to said figure, 40 represents one of the binding-posts for the leading-in Wires, Which is extended through a hole in the carryingplate 20, and has formed on it a circular head el with a shank having flat faces 42, which latter enters a correspondingly shaped recess in the top of the carrying-plate, thereby to prevent it from turning, and said post is threaded at each end and has arranged on one of its ends suitable nuts and other Wiresecuring` ineans, and has arranged on its other end suitable nuts to hold it in place. Binding-posts e3 for the magnet-Wires are arranged on the carrying-plate just back of the binding posts 40, said posts 43 having square heads at, Which enter correspondingly-shaped recesses in the plate to prevent them from turning, and on the threaded portions of said posts nuts and other wiresecuring means are arranged. Metallic strips are employed to electrically connect said binding-posts 43 with the bindingposts 40, which assist in holding said binding-pests i3 in position, said strips having holes through them at each end to receive the posts, and being held in place Yirmly by the nuts which are arranged on said posts. lilhen the binding-posts for the leading-in Wires and for the magnet-wires are arranged on the carrying-plate a single binding-post will be arranged on the back-piece for the connecting-Wires, in ease means are desired 9 for detachably engaging and electrically connecting said Wires, and, as shown in Fig. ll, a block 4G Of porcelain or other insulating material is secured to an arm 4:7, which may be mace of sheet metal and bent to embrace the block and having an end portion which extends over the top of the back-piece of the magnet and is secured to said backpiece and the single binding post is arranged on said block.

Herein the armature supporting-plate 149 is employed to carry the movable relay contact-members, and, referring particularly to Figs. 5 and 9, said contact-members consist of rigid arms 50, attached at one end by insulating means to said plate 149, which extend forward and tivo resilient arms 5l, 52, attached to the other end of said arms 50, which likewise extend forward, said resilient arms being arranged between and adapted respectively to engage stationary contactmembers 55 and 60. As the armature vibrates said rigid arm is moved to move the resilient contact-arms into and out of engagement with the stationary contact-niembers. The stationary contact-members are attached to binding-posts 56, 6l, Which are arranged on the carrying-plate 20, and are extended through said plate to provide means for supporting the contact-members Within the housing. rFlic stationary contactmembers 55 may be made as shown in Figs. l and 8, wherein it Will be observed that small graphite disks, as 57, are used as contact-surfaces, although the preferred form herein is represented in Fig. 12, wherein the contact-surfaces are made as rolls 65, of graphite or equivalent conducting material, said rolls being journaled in brackets G6, which are detachably connected to the lower ends of the binding-posts 67. By making the contact-members as rolls they may be rotated to bring fresh contact sur- 'faces for engagement With the movable resilient contact-arm upon adjustment thereof. The other stationary contact-members consists of angularly formed brackets 62, detachably connected to the lower ends of binding-posts 61, having their lower ends extended laterally and formed with upright portions bearing at their extremities contact-strips 63, the laterally extended portions being of sufficient length to support the upright portions beneath the movable contact-members and permit movements of said members Without engaging the brackets. Any number of relay-contacts will be provided as may be desired, and the bindingposts are formed with portions having flat faces, which enter correspondingly shaped recesses in the top of the carryingplate, thereby to prevent them from turning with relation to the plate.

Electrical connections With the movable contact-members are made by binding-posts 75, arranged on the carrying-plate 20, having metallic strips 76, detachably connected to them, and extensible metallic strips 7T attached at one of their ends to the ends of the strips 7G, and at their other ends to ears on the rigid arms of the movable contact-members, at the points of attachment of said arms With the armature supportingplate 149.

I claim l. In a relay, a housing for the armature and relay contact-members comprising an insulating carrying-plate and a globe tightly engaging the underside of said insulatingplate, a metallic-plate secured to the under'- side of said insulating-plate having means for pivotally supporting the armature and movable relay contact-members, and having a forward extension overlying the center of the insulating-plate, and a center-bolt passing through the insulating-plate and metalplate and globe, and clamping-means associated with said bolt for connecting one end thereof with the insulating-plate and metal-plate and other clamping-means associated with said bolt for connecting its other end with the globe.

In a relay, a housing' for the contactmembers consisting of a carrying-plate, a glass globe engaging the under side of said plate and a center-bolt extended through holes in said plate and globe, a sleeve extended through the hole in the globe having a flange at each end, its inner flange enga ging the interior of the globe, the threaded end of said bolt extending through said sleeve, and a. nut engaging said threaded end having a flanged neck to engage the outer flange on the sleeve, and Washers interposed bet-Ween said neck and the globe, substantially as described.

3. In a relay, a housing for the armature and relay contact-members consisting of a carrying-plate and a glass-globe engaging the under side of said plate, a center-bolt extended through said plate and globe, for securing them together, the end of said bolt projecting through the bottom of the globe, and a supporting-stand for the relay arranged on said projecting end of the bolt, said stand having seats at the corners on which the corners of the globe rest.

In testimony whereof, I have signed my name to this specification, in the presence of tivo subscribing Witnesses.

ALFRED A. ZIEGLER.

fitnesses B. J. Norms, H. B. Davis.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents.

Washington, D. C. 

